Manufacture of watch plates and cases



(No Model.)

A. H. POTTER.

MANUFAGTURE OP WATCH PLATES AND GASES. No. 360,818. L Patented Apr. 5, 1887.

ALBERT H. POTTER, E GENEVA, SWITZERLAND, AssIGNoR To THE PATENT OFFICE. j

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HAVEN WATCH COMPANY, OF NEW JERSEY.

MANUFAC'TURE OF WATCH PLATES AND`CASES.

SPECIFICATION forming part of Letters Patent: No. 360,818, dated April 5, 1887.

Application filed August 2G, 1886. Serial No. 211,879. (No model.)

.To aZZ whom, it may concern.-

' Be it known that I, ALBERT H. POTTER, of

lGeneva, in the Republic of Switzerland, have l thereof, reference being had to the accompanying drawings, in which- Figure 1 is a perspective view of the blank as cut from a sheet of metal. Fig. 2 is a like view of the same after having been subjected to the action of the cupping-dies.' Fig. 8 is a perspective view of the pendant and the combined movement-plate and case-center after having been prepared for the reception of the back plate, back cover, and pendant. Fig. 4. is a like view of said back plate. Figs. 5 and 6 are respectively perspective views from the front and back of said movement-plate and casecenter,peudant and back plate when completed and united for use. Fig. 7 is a section of the same upon'line x :t of Figs. 5 and 6, and Fig. 8 is a likeviewof a completed watch containing the said improvements. v

Letters of like name and kind refer to like parts in each of the figures.

The design of my invention is, mainly, to

' enable watches to be constructed more cheaply than has heretofore been practicable; and to this end my said invention consists, principally, in the method employed for constructing the movement-frameand case-center, substantially as and for the purpose hereinafter specitied.

It consists, further, in the method employed for combining the case-center and pendant, substantially as vand for the purpose hereinafter shown.

A now has its entire inner and outer surfaces dressed 0E in a lathe, and within the inner and outer corners of the flange t are cut right-angled rabbets aand a2, respectively, while within the corner of its opposite side is cut a third rabbet, a. The plate A constitutes the front movement-plate of a watch and its iiangeathe center of the' case therefor, and at a 'suitable point within the latter is provided a radial rectangular opening or mortise, a4, for the reception of the inner end of a pendant, B. Said pendant has at its inner end a tenon, b, that corresponds to and is adapted to rclosely ll said opening a", and when inserted therein is secured in place by the heading down of its inner projecting end.

Within the inner rabbet, a', is fitted a back movement-plate, C, which is cut from a plain sheet of metal and has the usual form, as seen in Fig. 4. Said plate is held in place by a steady pin and screw, or any of the means ordinarily employed, and between the same and the plate A are journaled the parts of the timetrain. The rabbet a2 receives a case-back, D, and the rabbet a3 a glass-bezel, E,while within the pendant is journaled a stem-arbor with a crown, F, all of usual construction,which completes the watch.

It will be seen that by my method a large saving is eiiected in the number of parts over watches of usual construction 5 that the movement-frame is much stronger than would be practicable if made wholly separate from the case, and that within my case there is considerably more space for the train than could be had in a case of the same exterior dimensions of ordinary make.

Having thus described my invention, what I claim is- 1. 'The method of constructing a case-center and movement-plate, which consists, first, in cutting a disk from sheet metal, next in forming around the edge of said disk an upwardturned flange, and, finally, in adapting the inner edge of said iange to the reception of a back movement-plate and its outer edge and the edgeof the disk for engagement bya caseback and glass-bezel, substantially as and for the purpose specified.

' 2. The method of combining a watch casecenter Iand pendant, which consists in forming within the case-center a radial rectangular opening, and upon the pendant a correspondroo.

rnble movementfplete7 and, finally7 fitting upon opposite sides of the plates thus combined n ease-back and a glass-bezel, substantially as z5 and for the purpose set forth.

In testimony thatI claim the foregoing I have hereunto set my hand this 31st day of July, A. D. 1886.

ALBERT H. POTTER.

W'itnesses:

GEO. S. PRINDLE, HENRY C. HAZARD. 

